The separation and sequestration of CO2 produced from the combustion of fossil fuels is the need of the day to encounter the greenhouse effect and global warming. Again, it is important also for improving the calorific value of natural gas and for reutilization of flue gas. Membrane technology has the potential to play a crucial role in this regard. Compared to other traditional techniques for the separation and sequestering of CO2, membrane technology, particularly ceramic membrane, is still relatively in the development stage. However, it has tremendous potential to emerge as a successful technology to meet the requirement in the future. This article reviews previous works and recent achievements by different researchers on various CO2 selective membranes with reference to other types such as polymeric; hybrid and mixed matrix types.
